Trevor Quayle <Tin### [at] hotmailcom> wrote:
: The reflected image seems brighter.

  That's not the problem with it. And it looks brighter because the sphere
has a non-black color (specifically rgb <1,.8,.6>).

-- 
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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Ruy <ruy### [at] hipernetcombr> wrote:
: The reflective sphere's shadow does not seem to be blurred in the
: reflection.

  That's how it should be. It's very close to the sphere and thus minimally
blurred.
  Blurred reflection means that objects which are closer are blurred less
than objects that are farther away.

-- 
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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Hmm... In the reflective sphere, you can see a highlight on the spheres in
front of it but yet from this angle, it doesn't appear like there is a
highlight on the back side of the front spheres.

Similarly with the green cylinder.  It has no highlights on this side of the
sphere but yet in the reflection, you can see a highlight.

Despite finding these errors, I have no clue how you did it.

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Did you use an inverse focal blur? i.e., blur where it would normally be
crisp clarity, and clarity where it would normally be blurry?

David

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No, this is correct behavior.  Highlights aren't actual markings on the
objects but depend are a reflection of the light sources (and others), so
you shouldn't expect the hightlights in the reflection to show up in the
same place as they arfe on the real objects.

-tgq


"Richard Dault" <rda### [at] NOSPAMentredeacom> wrote in message
news:3bd05ae6$1@news.povray.org...
> Hmm... In the reflective sphere, you can see a highlight on the spheres in
> front of it but yet from this angle, it doesn't appear like there is a
> highlight on the back side of the front spheres.
>
> Similarly with the green cylinder.  It has no highlights on this side of
the
> sphere but yet in the reflection, you can see a highlight.
>
> Despite finding these errors, I have no clue how you did it.
>
>

Post a reply to this message

The objects have no_reflection and the sphere is reflecting a bigger version
of the scene with focal_blur? (does it make any sense?)

--
Jonathan.

"Warp" <war### [at] tagpovrayorg> ha scritto nel messaggio
news:3bcfdd7a@news.povray.org...
>   I tried a different approach to blurred reflection. Didn't work
extremely
> well (which isn't a surprise knowing the algorithm...). Sorry for the PNG,
> but I didn't want JPG artifacts to destroy anything, and it isn't that
big.
>
>   Now you can start guessing how I did it. As you can see, I did not use
> antialiasing (I deliberately rendered the image without antialiasing to
show
> that I did not use the antialiasing trick). And yes, I rendered it
completely
> with POV-Ray 3.5beta in one run (ie, I did not use any external programs,
just
> POV-Ray and one single .pov file).
>   You can also watch for what is wrong in the reflection... Something that
> just cannot be corrected with this technique :)
>
>


----------------------------------------------------------------------------
----


>
>
> --
> #macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
> rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
> ],13),8)-3,10>#end blob{N(array[6]{11117333955,
> 7382340,3358,3900569407,970,4254934330},0)}//                     - Warp -

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I mean, it looks like that sphere is not reflecting those very objects (just
have a look to the wrong reflections of the checkered plane).

"JRG" <jrg### [at] hotmailcom> ha scritto nel messaggio
news:3bd06096@news.povray.org...
> The objects have no_reflection and the sphere is reflecting a bigger
version
> of the scene with focal_blur? (does it make any sense?)
>
> --
> Jonathan.
>
> "Warp" <war### [at] tagpovrayorg> ha scritto nel messaggio
> news:3bcfdd7a@news.povray.org...
> >   I tried a different approach to blurred reflection. Didn't work
> extremely
> > well (which isn't a surprise knowing the algorithm...). Sorry for the
PNG,
> > but I didn't want JPG artifacts to destroy anything, and it isn't that
> big.
> >
> >   Now you can start guessing how I did it. As you can see, I did not use
> > antialiasing (I deliberately rendered the image without antialiasing to
> show
> > that I did not use the antialiasing trick). And yes, I rendered it
> completely
> > with POV-Ray 3.5beta in one run (ie, I did not use any external
programs,
> just
> > POV-Ray and one single .pov file).
> >   You can also watch for what is wrong in the reflection... Something
that
> > just cannot be corrected with this technique :)
> >
> >
>
>
> --------------------------------------------------------------------------
--
> ----
>
>
> >
> >
> > --
> > #macro N(D,I)#if(I<6)cylinder{M()#local
D[I]=div(D[I],104);M().5,2pigment{
> > rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro
M()<mod(D[I],13)-6,mod(div(D[I
> > ],13),8)-3,10>#end blob{N(array[6]{11117333955,
> > 7382340,3358,3900569407,970,4254934330},0)}//                     -
Warp -
>
>

Post a reply to this message

Richard Dault <rda### [at] NOSPAMentredeacom> wrote in message
news:3bd05ae6$1@news.povray.org...
> Hmm... In the reflective sphere, you can see a highlight on the spheres in
> front of it but yet from this angle, it doesn't appear like there is a
> highlight on the back side of the front spheres.
>
> Similarly with the green cylinder.  It has no highlights on this side of
the
> sphere but yet in the reflection, you can see a highlight.
>
> Despite finding these errors, I have no clue how you did it.
>

Speaking for myself, I think that those highlights that you
pointed out are correct.  The highlight in the reflection *is*
positioned differently than in the direct view, but that is as
it should be.

I'm still a pov novice, though, so I have no guesses as to
method.

--
Tom Bates

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Wasn't it Warp who wrote:
>  I tried a different approach to blurred reflection. Didn't work extremely
>well (which isn't a surprise knowing the algorithm...). Sorry for the PNG,
>but I didn't want JPG artifacts to destroy anything, and it isn't that big.
>
>  Now you can start guessing how I did it. As you can see, I did not use
>antialiasing (I deliberately rendered the image without antialiasing to show
>that I did not use the antialiasing trick). And yes, I rendered it completely
>with POV-Ray 3.5beta in one run (ie, I did not use any external programs, just
>POV-Ray and one single .pov file).
>  You can also watch for what is wrong in the reflection... Something that
>just cannot be corrected with this technique :)

My guess would be that there's a complicated optical illusion going on
here. Somehow the sphere is very much larger and further away than it
appears, and those reflections aren't reflections of the other objects,
but of a different set of similar, but larger, objects.

Could we be looking though an elliptical hole in the chequered plane?

The blur is achieved through focal blur.

There may be a small no_image sphere in the foreground which casts the
shadow.

-- 
Mike Williams
Gentleman of Leisure

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Yup, you're right.  I have no idea what I was thinking....  For a minute
there, my mind re-wrote the laws of physics.

"Trevor Quayle" <Tin### [at] hotmailcom> wrote in message
news:3bd05f74$1@news.povray.org...
> No, this is correct behavior.  Highlights aren't actual markings on the
> objects but depend are a reflection of the light sources (and others), so
> you shouldn't expect the hightlights in the reflection to show up in the
> same place as they arfe on the real objects.
>
> -tgq

Post a reply to this message